Load Speed Control Configuration; Checklist For Load Speed Control Configuration - ABB ACS800 Firmware Manual

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• Select the start/stop control as COMM.CW, if the Master command is to be used
(Par. 10.02).
• Select the direction control as REQUEST (Par. 10.03).
• Select the drive reference control as COMM.REF(Par. 11.06).
• Set the minimum reference limits (Par. 11.07).
• Set the maximum reference limits (Par. 11.08).
• Select the CH2 link topology as ring (Par. 70.05). Select the Synchro control as
ON (Par. 78.01).
• Select the synchro input (Par. 10.14).
• Set the synchro gain (Par. 78.02).
• Set the shaft scaling factor for the scaling of speed reference received from the
Master (Par. 78.03).
• Set the position scaling factor (Par. 78.04).
• Set the maximum position correction limit in mm (Par. 78.05).
• Set the minimum position correction limit in mm (Par. 78.06).
• Set the synchronisation error limit for the Follower drive (Par. 78.09).
• Set the synchro correction scale in terms of rpm equivalent to 1 mm position error
(Par. 78.08).
• Set the synchro correction mode (Par. 78.12)
• Set the position hysteresis value (Par. 78.13)

Load speed control configuration

This section explains how the Load speed control function parameters have to be
configured. See section

Checklist for Load speed control configuration

• Activate the Load speed control function (Par. 77.01).
• Set the motor base speed (Par. 77.20). This is the speed at which the actual
motor current is checked with the load for calculating the maximum allowed
speed.
• Set the hold ramp time period (Par. 77.03). The speed reference is on hold at the
base speed for this period. The motor current at the base speed is checked after
this time period.
• Set the current values for the forward direction (Par. 77.04, 77.06,
77.10). Par.
when running in the forward direction. Par.
load current at the base speed in the forward direction. These parameters are to
be entered in the increasing order in the above sequence. For more details, see
section
Quick start-up guide
Load speed control
77.04 can be set with the empty hook current at the base speed
Load speed control
.
for detailed explanation.
77.10 can be set with the maximum
77.08 and